Improvement in carbureters



w. H. ELsToN.-

N0, 136,228, I I PateVn-teti Feb.25,17873.

W'n www. C Jim/@f2 for ,4M moro-LITHUGHAPH/ c C0. NX (osaamf Fna cess.)

VILLIAM H. ELSTON, OF MARSHALL, MICHIGAN.

IMPROVEMENT IN CARBURETERS.

Specification forming part of Letters Patent No. 136,228, dated February 25, 1873.

To all whom it may concern:

Be it known that I, WILLIAM H. ELsToN, of Marshall, in the county of Calhoun and State of Michigan, have invented an Improved Garbureter, ot' which the following'is a specitication:

My invention relates to that class of carbu- .reters in which a rotary cylinder is employed to force air into and through a tank or receiver containing gasoline; and the invention consists in the peculiar construction of the air-forcing cylinder and the regulating-valve in the tank, as hereinafter described, whereby machines of this class are simplified and improved, and rendered capable of easy operation, without requiring any very particular management.

In the drawing, Figure l is a llongitudinal central section of a cylinder and tank embodying my improvements, the regulating-valve being in elevation, and the plane of section of the cylinder being indicated by the line x 0c, Fig. 2. Fig. 2 is an end view of the cylinder, the-outer and inner heads at one end being removed. Fig. 3 is also an end view of the cylinder, showing the same end as in Fig. 2, but with only lthe outer head removed, the inner head being Vin place. Fig. et is a view of the opposite end of the cylinder from that shown in Figs. 2 and 3, the outer head being removed. Figs. `5 and 6 are views of the opposite ends of the cylinder with the outer heads removed, representing modifications to be hereinafter described; and Fig. 7 is an end view of the valve, also representing a moditication.

Similar letters ot'reference indicate like parts in the several figures.

A represents the horizontal air-forcing cylinder, having hollow journals, which are itted in bearings in any suitable supporting framework, a a b. The cylinder is divided, by partitions or inner heads cd, into a main central space, and chambers f g at the ends. The central space is subdivided into three compartments, c c1 c2, by means of horizontal wings h h h'attached to the inner circumference and the inner heads of the cylinder. These wings h do not touch each other at the central or axial line of the cylinder, and this is to permit the free circulation of water in the cylinder, for a purpose to be hereinafter stated. There are central openings, z' i', made in the inner heads c d, so that water can also circulate in -the chambers at the ends of the cylinder. Each compartment, c e1 c2, communicates with the chamber g by means of an aperture, j, Figs. 1 and 3, and with the chamber at the opposite end of the cylinder by means of openings k, Fig. 2, which are the inner extremities of elbow-pipes Z Z, which open into the chamber j' at some distance to one side of the'openings 7c. The cylinder communicates with the tank by means ot' an L- shaped pipe, m, which passes loosely through the hollow journal of the cylinder, and opens upward in the chamber f, as shown in Fig. l, said pipe being connected by means of a sliding sleeve, a, or in lany other suitable manner, with the pipe o, which enters the tank at the bottom, and extends upward therein for a short distance, as shown in dotted lines, Fig. 1. On this extended end of the pipe o is iitted the regulating-valve G, which is a vertical cylinder, closed at the top and open at the bottom, and loosely fitted on the pipe, so as to easily rise and fall as the quantity of gasoline in the tank is increased or diminished.

The size of the valve and the length of the extension of the pipe must be so adapted that there will always be a space between thc upper end of the pipe and the head of the valve. Perforations are Jformed around the lower edge of the valve, through which the air passes into the tank from the cylinder.

Air entersl the cylinder through an L-shaped pipe, p, similar to that at the opposite end ot the cylinder, and already described. It is very important that these pipes m p be always kept in the position shown in the drawing;

and for this purpose a curved arm, q, attached at one end to the pipe, and at the other adapted to enter a recess in the stationary frame work, may be used. This will keep the pipe from turning. Any oth er suitable device may be employed. The tank B is provided with the usual pipe i, through which the gas is conducted to theburners.

Suitable driving mechanism is fitted on one of the hollow journals, by means of which a rotary motion is given to the cylinder. The inner and outer heads of the cylinder are, oi' course, sealed air-tight.

When it becomes necessary to replenish the water an elbow-shaped connction or funnel is screwed onto the end of one of the pipes which enter the cylinder, said connection rising above the end of the pipe which is wit-hin the cylinder, so that the water will readily flow in.

Having thus described the construction of my improved carbureter, I will now explain its operation: The cylinder is partly filled with water to about the height indicated by the dotted lines in Fig. l, and gasoline is poured into the tank to any height below the top. of the pipe o.` As the cylinder is revolved air enters the chamber g through the pipe p, and, passing through the apertures j, fills the compartments c e1 c2. These compartments are rendered separate from each other by the water, which forms a seal. The revolution of the cylinder causes the apertures between the central and end chambers to be carried successively below the water and then out oi' the same. Then the aperture is below water of course it is sealed against the passage of air. As has been` stated, each compartment e c1 c2 has an induction and an eduction aperture;

but these openings in the chambers f y are not in the same plane; therefore, at'ter one ot' the apertures j between the chamber g and the central portion of the cylinder has passed under the water, the mouth of the elbow-shaped tube at the other end of the same compartment remains above the surface of the water, and the air contained in the compartment es- `capes through this pipe, which is the only opening now left. The compartments being successively lled and discharged in this mauner, a constant stream of air will be forced into the valve in the tank, and'thence through the gasoline, whereby it is 'carbureted into the upper part of the tank, which then becomes a holder, from whichV the burner or burners are supplied. As the quantity of gasoline diminishes the valve settles down so that it always remains suiiiciently immersed.

The cylinder may be provided with four win gs or partitions, hh, as shown in dotted lines in Figs. .3 and 6, and, instead ot' having openin gs j j, as represented in Fig. 3, the partition l may be provided with casings s s, (see Fig. 5,) in which are small tubes, shown indotted lines, opening at one end in the chambery and at the other into 011e of the chambers e c' c2. These openings are not in the same plane, as clearly indicated by the dotted lines. The purpose of these tubes is to equalize the press` ure, and thus render the cylinder steady in its motion.

lVhen the construction shown in Fig. is employed there is also a modification in the. communication between the compartments c and the chamber f, as illustrated in Fig. 6. Small apertures t are made through the partition c, opening into casings or boxes u u locat ed within the chamber f, Fig. 1. These boxes are open at r.

To give to the valve C a uniform motion slits -lnay be made in its lower edge. (See Fig. 7.) These may be used either with or without the series of holes shown in Fig. l.

Havingthus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The sealed=single cylinder A, revolving on suitable bearings and having transverse and longitudinal partitions, and the elbowshaped inlet and outlet pipes m1), all arranged and operating inthe manner and for the purpose set forth. v

f 2. The inlet-openin betweenthc chambers eel, &c.,"and the space gpro'vided with casingss s and communicating-tubes, substantially as described, and as shown in Fig. 5.

3. The outletopenings from the central chambers e to the forcin g-head f, provided with casings u having the openings yv and elbowpipes t, substantially as described, and as shown in Fig. 6.

4. The valve C in the carbureting-chamber, formed with a slitted edge, constituting wings and wedge shaped openings, as shown in Fig. 7.

To the abovesliecitication ot' myinvention I have signed my name this 11th day of October, A. D. 1872. f

VILLIAM H. ELST-ON.

\\"itnesses:

WM. C. WHITE, Or'ro LEE JonNsoN. 

